Home / 3,138.13-4,708.41-1,838.08

Finding the Fourth Proportional to 3,138.13, 4,708.41 and 1,838.08

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Solution

The fourth proportional to 3,138.13, 4,708.41 and 1,838.08 is: 2,757.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.13 : 4,708.41 = 1,838.08 : x
  2. Step 2: Convert to fraction form
    3,138.13/4,708.41 = 1,838.08/x
  3. Step 3: Cross multiply
    3,138.13x = 4,708.41 × 1,838.08
  4. Step 4: Simplify right side
    3,138.13x = 8,654,434.25
  5. Step 5: Solve for x
    x = 8,654,434.25/3,138.13
  6. Step 6: Final answer
    x = 2,757.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.